Japandroids 
Sovereignty
Drop D

Here's a video for you to actually see what he's doing. 
http://www.youtube.com/watch?v=zychqu5CGZ4 (Sovereignty starts at about 3:54-ish)

Intro (Strum this lots!)
|--0-------------------|
|--0-------------------|
|--0-------------------|
|--0-------------------|
|--0-------------------|
|--12------------------|

Rest of the song
|--12-----10-----14-----5----|
|--10-----8------12-----3----|
|--0------0------0------0----|
|--0------0------0------0----|
|--0------0------0------0----|
|--12-----10-----14-----5----|
You'll have to figure out the strumming, but it's easy, I have faith in you.

Sometimes Brian will strum really fast and slide up.It would look like this:
|--12-----10-----14-/-17-----5----|
|--10-----8------12-/-15-----3----|
|--0------0------0--/-0------0----|
|--0------0------0--/-0------0----|
|--0------0------0--/-0------0----|
|--12-----10-----14-/-17-----5----|

That's pretty much all the song is.
Enjoy!!